Numerical Simulation Of Gas Liquid Two-Phase Flow In A Bubble Column Reactor Based On Fluent

Bubble column reactor is a gas-liquid two-phase flow reaction apparatus with simple structure, high heat transfer and mass transfer efficiency. So it is widely used in petrochemical industry. A more efficient reactor structure will be designed and the operating parameters will also be optimized if it is studied, and It is helpful to Provide the basis for the actual production.A two fluid model of computational fluid mechanics is employed in this paper, Interphase mass and heat transfer are not considered, Two dimensional and three dimensional bubble columns are simulated and analyzed based on the VOF model and the Euler-Euler model, After comparing with the experiment, the validity of simulation is verified, and then the operating parameters and physical parameters are changed. The effects of inlet velocity, liquid phase viscosity and gas-liquid surface tension bubble formation and motion trajectory are studied based on two dimensional model, Then three-dimensional model is established, How the size and distribution of gas holdup are influenced by different distributors are studied, the optimal model of distributor was determined, how the size and distribution of the bubbling bed gas holdup are effected by gas- liquid surface tension, liquid viscosity, temperature and superficial gas velocity are studied based on the optimal model.